Could two lines with negative slope be perpendicular? Explain.

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19-06-2017
Mathematics

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Could two lines with negative slope be perpendicular? Explain.

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irspow irspow · Answer 1 · 2017-06-19T22:40:48+02:00

irspow irspow

19-06-2017

No. For two lines to be perpendicular their slope must be the negative reciprocals of one another, mathematically:

m1*m2=-1

So if the slope of one line is negative, the line perpendicular to this must be positive by definition.

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